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Gold purifying resin process

A technology of gold and craftsmanship, which is applied in the field of gold purification by resin method, can solve the problems of poor product quality, small application range, and complicated equipment, and achieve the effect of small footprint, good product quality, and simple equipment

Active Publication Date: 2007-01-03
CHANGCHUN GOLD RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a process for purifying gold by resin method, which solves the problems of the existing process such as small adaptability range, complex equipment, high cost, and poor quality of obtained products.

Method used

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  • Gold purifying resin process

Examples

Experimental program
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Effect test

Embodiment 2

[0025] Carry out according to the following steps, take gold mud 285g, gold mud main composition: Au 18.97%, Ag 41.82%, Cu 0.023%, Pb 0.22%, Fe 0.31%;

[0026] step 1:

[0027] Dry and crush the gold mud of the above grade and add it to the impurity removal reaction kettle, then add sulfuric acid with a liquid-solid ratio of 5:1 and a concentration of 30%, control the heating temperature at 70°C, and control the speed of the mixer at 200r / min; the reaction time is 5 hours, The reaction is carried out under normal pressure. After the reaction is over, stop heating and stirring, use a vacuum pump to filter, rinse with hot water for 3 times after filtering; add the sulfuric acid residue after washing to the silver removal reaction kettle, enter step 2, and open the filter while filtering. The induced draft fan opens the spray tower, and at the same time opens the upper exhaust valve of the impurity removal reactor; step 1, the impurity removal filtrate is adsorbed by activated ca...

Embodiment 3

[0036] The following steps are carried out, take gold mud 185g, the main components of gold mud: Au 22.21% Ag 56.95%, Cu 0.019%, Pb 0.32%, Fe 0.58%;

[0037] step 1:

[0038] Dry and break the gold mud of the above grade into the impurity removal reaction kettle, then add sulfuric acid with a liquid-solid ratio of 6:1 and a concentration of 25%, control the heating temperature at 65°C, and control the speed of the mixer at 250r / min; the reaction time is 4 hours, The reaction is carried out at normal pressure, stop heating and stirring after the reaction is over, filter with a vacuum pump, rinse with hot water for 3 times after filtering; add the sulfuric acid slag after washing to the silver removal reactor, enter step 2, and open the starter while filtering. Fan, open the spray tower, and at the same time open the upper exhaust valve of the impurity removal reactor; step 1, the impurity removal filtrate is adsorbed by activated carbon, and the acid waste water is neutralized ...

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Abstract

The present invention relates to gold purifying resin process. The process of extracting gold with gold slime includes the following steps: depurating gold slime with sulfuric acid; eliminating silver with nitric acid; dissolving the nitric acid sludge with aqua regia in a dissolving reactor, regulate pH value to 1-3 after finishing reaction, filtering with a vacuum pump and collecting the filter residue for collecting gold; pressing the filtrate to depurating resin column, adding sodium sulfite in a reducing reactor for reducing, filtering with a vacuum pump, washing gold powder with hot water for several times, stoving and casting ingot. The process has wide applicable range and other advantages.

Description

technical field [0001] The invention relates to a gold mud treatment technology, in particular to a process for purifying gold by a resin method. Background technique [0002] As we all know, with the advancement of science and technology, there are many methods for gold purification at home and abroad, mainly including extraction method, water chlorine method, electrolysis method, etc. Among them, the selection of extraction agent in the extraction method is very important, and the choice of extraction agent with good performance is very important. It can have a good effect of separating gold and impurities, achieve the purpose of gold purification, and the purity of gold is also high. The current extraction agent is mainly aimed at the gold in the precious liquid, so the process requires extraction and stripping, and the process is long; some The data report the method of direct reduction in the organic phase. When the gold powder is fine, this method is easy to cause the ...

Claims

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Application Information

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IPC IPC(8): C22B3/24C22B11/00
CPCY02P10/20
Inventor 巩春龙陈民友杜淑芬袁玲
Owner CHANGCHUN GOLD RES INST
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